Hair brush



FIG. 1 is a front perspective view of a hair brush in accordance with our ornamental design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a rear perspective view thereof. 

CLAIM The ornamental design for a hair brush, as shown and described. 